#define FOut 32
#define FIn 32
#define FOUT_BLOCKING 8
#define FIN_BLOCKING 8
#define X_BLOCKING 3
#define FOUT_NB_BLOCKS FOut/FOUT_BLOCKING
#define FIN_NB_BLOCKS FIn/FIN_BLOCKING
#define X_NB_BLOCKS N/X_BLOCKING
#define X_BOUND X_NB_BLOCKS*X_BLOCKING
